One thing that I’ve found that really helps me is getting rid of my tweezers, dimming the light in my bathroom, and giving myself time limits when I am in there.

I got trichotillomania specific fidget toys! They help simulate the feeling of pulling hair. Also “delay and distract” - when I feel the urge or notice myself starting to pull hair I make myself try doing an activity (ie coloring) for 15 mins and usually the urge is gone by then but if not I do 15 mins intervals until the urge fades away